WO2023090706A1 - 차량용 사이드실 - Google Patents
차량용 사이드실 Download PDFInfo
- Publication number
- WO2023090706A1 WO2023090706A1 PCT/KR2022/017117 KR2022017117W WO2023090706A1 WO 2023090706 A1 WO2023090706 A1 WO 2023090706A1 KR 2022017117 W KR2022017117 W KR 2022017117W WO 2023090706 A1 WO2023090706 A1 WO 2023090706A1
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- WO
- WIPO (PCT)
- Prior art keywords
- frame
- side sill
- vehicle
- reinforcing frame
- reinforcing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/157—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body for side impacts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/02—Side panels
- B62D25/025—Side sills thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2304/00—Optimising design; Manufacturing; Testing
- B60Y2304/03—Reducing weight
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection
Definitions
- the present invention relates to a side sill for a vehicle.
- side sills applied to eco-friendly vehicles must be able to absorb maximum impact energy within a narrow space and have a minimum weight to improve energy efficiency of eco-friendly vehicles.
- Patent Document 1 KR 20-1998-0043143 U
- an object of the present invention is to provide a side sill for a vehicle capable of efficiently absorbing collision energy and achieving weight reduction.
- an object of the present invention is to provide a side sill for a vehicle capable of safely protecting occupants and a battery, which is a core component, by minimizing an amount of inflow into the room due to a collision.
- the present invention provides a first side sill frame; a second side sill frame coupled to the first side sill frame to form a hollow portion together with the first side sill frame; a first reinforcing frame disposed in the hollow part and having one side bonded to the first side sill frame to form a first closed section; and a second reinforcing frame disposed in the hollow portion and having one side bonded to the first reinforcing frame to form a second closed section, wherein the first reinforcing frame and the second reinforcing frame include a side sill for a vehicle.
- a side sill for a vehicle including concavo-convex portions continuously formed along the longitudinal direction of the vehicle.
- At least one of the first side sill frame, the second side sill frame, the first reinforcement frame, and the second reinforcement frame may be made of steel.
- a protruding surface and an inner inclination surface are formed alternately in the longitudinal direction of the side sill, and an inclined surface is formed between the protruding surface and the inner inclination surface, and the protruding surface, the inner inclination surface, and the inclined surface are formed,
- Each of the side sills may be continuously formed on a cross section in a width direction-height direction of the side sills intersecting the longitudinal direction of the side sills.
- the protruding surface of the first reinforcing frame may overlap the protruding surface of the second reinforcing frame, and the inner elevation surface of the first reinforcing frame may overlap the inner elevation surface of the second reinforcing frame.
- the inner elevation of the first reinforcing frame is bonded to the first inner surface of the first side sill frame, and the protruding surface of the first reinforcing frame is spaced apart from the first inner surface of the first side sill frame to provide a first shock absorber. space can be created.
- the inner elevation of the first reinforcing frame may have an installation length of 15 to 50 mm in the longitudinal direction of the side sill.
- the protruding surface of the second reinforcing frame is bonded to the second inner surface of the second side sill frame, and the inner surface of the second reinforcing frame is spaced apart from the second inner surface of the second side sill frame to form a second buffer space. can be formed.
- the second reinforcing frame may have a protruding surface having an installation length of 15 to 50 mm in the longitudinal direction of the side sill.
- the protruding surface and the inner elevation have an installation length of 15 to 50 mm in the longitudinal direction of the side sill, and between the protruding surface and the inner elevation, there is a 2 to 10 mm gap.
- a step of 10 mm can be formed.
- Installation widths of the first reinforcement frame and the second reinforcement frame may not decrease from the second inner surface of the second side sill frame toward the first inner surface of the first side sill frame.
- the first reinforcement frame and the second reinforcement frame may be formed by bending a single steel plate in multiple stages.
- the first reinforcing frame may have a bending point protruding outward from the first closed section.
- the first reinforcing frame may be formed at a position where the bending point is spaced apart from the first inner surface of the first side sill frame by 30 to 70% of the installation width of the first reinforcing frame.
- the first reinforcing frame may include a first section extending toward a first inner surface of the first side sill frame with respect to the bending point; and a second section bent at the bending point as a boundary to extend toward the second inner surface of the second side sill frame and form a bending angle with the first section inside the first closed section.
- the bending angle may be formed inside the first closed section, and the bending angle may have a range of 165 to 175 degrees.
- the vehicle side sill has an effect of efficiently absorbing collision energy and achieving weight reduction.
- the side sill for a vehicle has an effect of safely protecting occupants and a battery, which is a core component, by minimizing an amount of inflow into the room due to a collision.
- FIG. 1 is a perspective view of a side sill for a vehicle of a first comparative example compared to a side sill for a vehicle of the present invention.
- FIG. 2 is a perspective view of a side sill for a vehicle according to a first embodiment of the present invention.
- FIG. 3 is a cross-sectional view in the direction I-I' of FIG. 2 .
- FIG. 4 is a cross-sectional view in the direction II-II' of FIG. 2 .
- FIG. 5 is a cross-sectional view in the direction III-III′ of FIG. 2 .
- FIG. 6 is a perspective view of a first reinforcing frame of a side sill for a vehicle of FIG. 2 .
- FIG. 7 is a perspective view of a second reinforcing frame of a side sill for a vehicle of FIG. 2 .
- FIG. 8 is a view showing locations of bending points of the side sill for a vehicle according to the first embodiment of FIG. 2 .
- 9A to 9C are deformation analysis results of a side sill for a vehicle of Comparative Example 1.
- 10A to 10C are deformation analysis results of the side sill for a vehicle according to the first embodiment.
- FIG. 11 is a load-displacement diagram of a vehicle side sill of the first comparative example of FIG. 1 and the first embodiment of FIG. 2 .
- the X axis shown in the accompanying drawings is the width direction of the vehicle side sill
- the Y axis is the longitudinal direction of the vehicle side sill
- the Z axis is the height direction of the vehicle side sill.
- the X axis shown in the accompanying drawings is the width direction of the vehicle side sill
- the Y axis is the longitudinal direction of the vehicle side sill
- the Z axis is the height direction of the vehicle side sill.
- FIG. 1 is a perspective view of a side sill for a vehicle of a first comparative example compared to a side sill for a vehicle of the present invention.
- Comparative Example 1 differs from Example 1, which will be described later, in that a portion where the concavo-convex portion P is not formed is formed along the longitudinal direction of the side sill.
- the deformation of the first reinforcement frame 300 and the second reinforcement frame 400 is not crushed in a symmetrical shape in the X-axis direction, and unstable crushing deformation of an asymmetrical shape may occur.
- This has a problem in that it can be a major anxiety factor in exhibiting stable collision energy absorption performance under various collision environments.
- FIG. 2 is a perspective view of a side sill for a vehicle according to a first embodiment of the present invention.
- FIG. 3 is a cross-sectional view in the direction I-I' of FIG. 2
- FIG. 4 is a cross-sectional view in the direction II-II' of FIG. 2
- FIG. 5 is a cross-sectional view in the direction III-III' of FIG.
- FIG. 6 is a perspective view of a first reinforcing frame 300 of a side sill for a vehicle of FIG. 2
- FIG. 7 is a perspective view of a second reinforcing frame 400 of a side sill for a vehicle of FIG. 2 .
- FIG. 8 is a view showing locations of bending points of the side sill for a vehicle according to the first embodiment of FIG. 2 .
- a side sill for a vehicle according to the first embodiment may include a first side sill frame 100 , a second side sill frame 200 , a first reinforcing frame 300 and a second reinforcing frame 400 .
- the first side sill frame 100 may be disposed inside the side sill in the width direction in the X-axis direction.
- the second side sill frame 200 may be coupled to the first side sill frame 100 to form a hollow part S together with the first side sill frame 100 .
- the second side sill frame 200 may be disposed outside the side sill in the width direction in the X-axis direction.
- the second side sill frame 200 may be joined to the first side sill frame 100 by welding or the like.
- the first reinforcing frame 300 may be disposed in the hollow part S, and one side may be bonded to the first side sill frame 100 to form a first closed cross section M1.
- the first reinforcing frame 300 is bonded to the first side sill frame 100 to form the first closed cross section M1, thereby improving mechanical rigidity of the vehicle side sill.
- the first reinforcing frame 300 may include a first upper flange 310, a pair of first web members 330, and a pair of first lower flanges 350 on the X-Z axis cross section of the side sill.
- First web members 330 may be connected to both ends of the first upper flange 310 in the height direction, respectively.
- the first upper flange 310 may have a meandering shape in the longitudinal direction of the side sill.
- the protruding surface P1 and the inner surface P2 may be alternately formed in the longitudinal direction of the side sill, and the inclined surface P3 may be formed between the protruding surface P1 and the inner surface P2.
- the first web member 330 may extend from the first upper flange 310 and extend toward the first inner surface 110 of the first side sill frame 100 .
- the first reinforcing frame 300 may be formed by bending such that the first web member 330 and the first lower flange 350 are disposed to cross each other.
- the first lower flange 350 may be bonded to the first inner surface 110 of the first side sill frame 100 .
- the second reinforcement frame 400 may be disposed in the hollow portion S, and one side may be bonded to the first reinforcement frame 300 to form a second closed section M2.
- the second reinforcing frame 400 is bonded to the first reinforcing frame 300 at one side to form the second closed section M2, thereby improving the mechanical rigidity of the vehicle side sill.
- the second reinforcing frame 400 may include a second upper flange 410, a pair of second web members 430, and a pair of second lower flanges 450 on the X-Z axis cross section of the side sill.
- the second upper flange 410 may have a meandering shape in the longitudinal direction of the side sill.
- the protruding surface P1 and the inner surface P2 may be alternately formed in the longitudinal direction of the side sill, and the inclined surface P3 may be formed between the protruding surface P1 and the inner surface P2.
- the second upper flange 410 may be flat. According to this, when an adhesive or the like for bonding with the second side sill frame 200 is applied to the second upper flange 410, the adhesive strength of the second upper flange 410 can be improved, and the bonding and assembly work can be reduced. Convenience can be improved.
- Second web members 430 may be connected to both ends of the second upper flange 410 in the height direction, respectively.
- the second web member 430 may extend from the second upper flange 410 and extend toward the first inner surface 110 of the first side sill frame 100 .
- the second lower flange 450 of the second reinforcing frame 400 may be bonded to the first web member 330 of the first reinforcing frame 300 .
- a step Q2 may be formed between the second web members 430, and the distance between the pair of second lower flanges 450 in the Z-axis direction is equal to the pair of second web members 450.
- the Z-axis direction spacing of the members 430 may have a wider spacing.
- the first reinforcement frame 300 and the second reinforcement frame 400 may include concavo-convex portions P continuously formed along the longitudinal direction of the side sill.
- uneven portions P may be continuously formed throughout the longitudinal direction of the side sill.
- the protruding surface P1 and the inner elevation surface P2 are alternately formed in the longitudinal direction of the side sill, and the inclined surface P3 is formed between the protruding surface P1 and the inner elevation surface P2. can be formed
- the first reinforcement frame 300 and the second reinforcement frame 400 include concavo-convex parts P, so that the first reinforcement frame 300 and the second reinforcement frame 400 are made of steel.
- the stiffness can be improved without increasing the thickness of the back.
- the concavo-convex parts P of the first and second reinforcing frames are continuously formed along the longitudinal direction of the side sill, so that the first and second reinforcing frames can stably resist collision energy until the first and second reinforcing frames are sufficiently crushed.
- the first reinforcing frame 300 and the second reinforcing frame 400 have a protruding surface P1, an inclined surface P3, an inner elevation surface P2, an inclined surface P3, and a protruding surface P1 on the longitudinal cross section of the side sill. ) is repeated, the concavo-convex portion P may be continuously formed in the longitudinal direction.
- first side sill frame 100 and the first reinforcement frame 300 are joined by spot welding
- first reinforcement frame 300 and the second reinforcement frame 400 are joined by laser welding or spot welding
- the second side sill frame 200 and the second reinforcing frame 400 may be bonded by an adhesive material.
- the first side sill frame 100 and the second side sill frame 200 may be joined by spot welding.
- the bonding between members such as the first reinforcing frame 300, the second reinforcing frame 400, the first side sill frame 100, and the second side sill frame 200 is a variety of bonding such as welding bonding or adhesive bonding. method can be applied.
- At least one of the first side sill frame 100, the second side sill frame 200, the first reinforcement frame 300, and the second reinforcement frame 400 may be formed by form-forming or crash-forming a steel plate. . This can contribute to reducing manufacturing cost through reduction of mold cost and the like.
- the first side sill frame 100, the second side sill frame 200, the first reinforcing frame 300, and the second reinforcing frame 400 may be made of ultra-high strength steel having a tensile strength of 980 MPa or more.
- first side sill frame 100 and the second side sill frame 200 may be made of a material including 1470 MART steel, and the first reinforcing frame 300 and the second reinforcing frame 400 are It can be made of materials including 1180 TRIP steel and 980 DP steel.
- At least one of the first side sill frame 100 , the second side sill frame 200 , the first reinforcement frame 300 and the second reinforcement frame 400 may be made of steel.
- first side sill frame 100, the second side sill frame 200, the first reinforcement frame 300, and the second reinforcement frame 400 may be made of steel. Accordingly, mechanical rigidity of the vehicle side sill may be improved.
- the protruding surface P1 and the inner elevation surface P2 are alternately formed in the longitudinal direction of the side sill, and the inclined surface P3 is formed between the protruding surface P1 and the inner elevation surface P2. can be formed
- the protruding surface P1, the inner elevation surface P2, and the inclined surface P3 may be continuously formed on the cross section (X-Z axis cross section) of the side sill in the width direction-height direction, respectively, intersecting the longitudinal direction of the side sill.
- the protruding surface P1 , the inner elevation surface P2 , and the inclined surface P3 may be continuously formed throughout the cross section in the width direction-height direction (X-Z axis cross section) of the side sill.
- the protruding surface P1, the inner elevation surface P2, and the inclined surface P3 open toward the first inner surface 110 of the first side sill frame 100 on the cross section in the width-height direction (X-Z axis cross section) of the side sill, respectively. It may include a 'U-shaped' or 'V-shaped' cross-section portion.
- the size of the cross section on the cross section in the width direction-height direction may decrease toward the protruding surface P1, the inclined surface P3, and the inner elevation surface P2.
- the protruding surface P1, the inner surface P2, and the inclined surface P3 of the first and second reinforcing frames cross the longitudinal direction of the side sill, respectively, in the width direction-height direction cross section (X-Z shaft cross section), there is an effect of stably resisting collision energy until the first and second reinforcing frames are sufficiently crushed.
- the protruding surface P1 of the first reinforcing frame 300 overlaps the protruding surface P1 of the second reinforcing frame 400, and the inner surface P2 of the first reinforcing frame 300 is the second reinforcing frame ( 400) may overlap the inner elevation surface (P2).
- the protruding surfaces P1 of the first reinforcing frame 300 and the second reinforcing frame 400 overlap each other, and the inner surfaces P2 of the first reinforcing frame 300 and the second reinforcing frame 400 overlap each other.
- the coupling position of the first reinforcing frame 300 and the second reinforcing frame 400 can be naturally induced, so that the workability of the operator can be improved.
- the inner elevation surface P2 of the first reinforcement frame 300 is bonded to the first inner surface 110 of the first side sill frame 100, and the protruding surface P1 of the first reinforcement frame 300 is the first side sill frame 100.
- a first buffer space R1 may be formed while being spaced apart from the first inner surface 110 of the seal frame 100 .
- the inner elevation surface P2 of the first reinforcing frame 300 may have an installation length Q1 of 15 to 50 mm in the longitudinal direction of the side sill.
- the protruding surface P1 of the second reinforcing frame 400 is bonded to the second inner surface 210 of the second side sill frame 200, and the inner elevation surface P2 of the second reinforcing frame 400 is the second side sill frame 400.
- a second buffer space R2 may be formed while being spaced apart from the second inner surface 210 of the seal frame 200 .
- the second reinforcing frame 400 may have an installation length Q1 of 15 to 50 mm in the longitudinal direction of the protruding surface P1 of the side sill.
- the inner elevation surface P2 of the first reinforcing frame 300 is bonded to the first inner surface 110 of the first side sill frame 100, and the protruding surface P1 of the second reinforcing frame 400 is the second side sill frame. It may be bonded to the second inner surface 210 of the seal frame 200 .
- the inner elevation surface P2 of the first reinforcing frame 300 and the protruding surface P1 of the second reinforcement frame 400 have an installation length Q1 of less than 15 mm in the longitudinal direction of the side sill, the inner elevation surface ( P2) and the first inner surface 110, the matching surface for bonding becomes small, so laser welding, spot welding, etc. may be difficult to bond.
- the protruding surface P1 and the inner elevation surface P2 have an installation length Q1 of 15 to 50 mm in the longitudinal direction of the side sill, and the protruding surface A step Q2 of 2 to 10 mm may be formed between (P1) and the inner elevation surface (P2).
- the inner elevation surface P2 of the first reinforcement frame 300 may be bonded to the first inner surface 110 of the first side sill frame 100 .
- the protruding surface P1 of the second reinforcement frame 400 may be bonded to the second inner surface 210 of the second side sill frame 200 .
- the protruding surface P1 and the inner surface P2 have an inner surface ( P2) and the first inner surface 110, the matching surface for bonding becomes small, so laser welding, spot welding, etc. may be difficult to bond.
- the protruding surface P1 and the inner elevation surface P2 have uneven portions ( There is a problem in that P) cannot properly perform a role for improving rigidity without increasing the thickness of the steel materials constituting the first reinforcing frame 300 and the second reinforcing frame 400.
- the uneven portion P is first reinforced. There is a problem in that it cannot properly perform a role for improving rigidity without increasing the thickness of the steel materials constituting the frame 300 and the second reinforcing frame 400.
- the first reinforcing frame 300 and the second reinforcing frame 400 are made by utilizing high-strength steel of 980 MPa or more when the step Q2 between the protruding surface P1 and the inner elevation surface P2 exceeds 10 mm. Difficulty in forming the first reinforcing frame 300 and the second reinforcing frame 400 may occur.
- the first reinforcement frame 300 and the second reinforcement frame 400 are directed from the second inner surface 210 of the second side sill frame 200 to the first inner surface 110 of the first side sill frame 100.
- the installation width may not decrease as you go further.
- the first reinforcing frame 300 and the second reinforcing frame 400 are connected from the first inner surface 110 of the first side sill frame 100 to the second inner surface 210 of the second side sill frame 200. ) direction, the installation width can increase.
- first reinforcing frame 300 and the second reinforcing frame 400 are configured from the first inner surface 110 of the first side sill frame 100 to the second inner surface of the second side sill frame 200 ( 210), the installation width may increase, or may not decrease while having at least the same installation width.
- the first and second reinforcing frames When an impact can be applied in the X-axis direction from the side of the second side sill frame 200, and the installation width of the first and second reinforcing frames increases in a direction away from the point where the impact is applied, the first and second reinforcing frames It can be easily compressed and deformed in the direction in which the impact is applied, and the load performance can be improved.
- the first reinforcement frame 300 and the second reinforcement frame 400 may be formed by bending a single steel plate in multiple stages.
- the first and second reinforcing frames may be formed by bending a single steel plate in multiple stages.
- the first reinforcing frame 300 is formed by bending a single steel plate in multiple stages, so that the first and second reinforcing frames composed of a single steel plate act as one body and the mechanical rigidity of the vehicle side sill can be improved.
- the first reinforcement frame 300 may be formed by bending a first steel plate having a first thickness in multiple stages.
- the protruding surface P1 and the inner elevation surface P2 of the first reinforcing frame 300 have an installation length of 10.7 to 35.7 times the first thickness in the longitudinal direction of the side sill, and the first reinforcing frame 300 has a protruding surface.
- a step of 1.4 to 7.1 times the first thickness may be formed between the (P1) and the inner elevation surface (P2).
- the first reinforcement frame 300 may be formed by bending a 1.4 mm steel plate in multiple stages.
- the first reinforcing frame 300 has an installation length of 15 to 50 mm in the longitudinal direction of the protruding surface P1 and the inner surface P2 of the side sill, and between the protruding surface P1 and the inner surface P2.
- a step of 2 to 10 mm may be formed.
- the second reinforcement frame 400 may be formed by bending a second steel plate having a second thickness in multiple stages.
- the protruding surface P1 and the inner elevation surface P2 of the second reinforcing frame 400 have an installation length of 12.5 to 41.7 times the second thickness in the longitudinal direction of the side sill, and the second reinforcing frame 400 has a protruding surface.
- a step of 1.7 to 8.3 times the second thickness may be formed between (P1) and the inner elevation surface (P2).
- the second reinforcing frame 400 may be formed by bending a 1.2 mm steel plate in multiple stages.
- the second reinforcing frame 400 has an installation length of 15 to 50 mm in the longitudinal direction of the protruding surface P1 and the inner surface P2 of the side sill, and between the protruding surface P1 and the inner surface P2.
- a step of 2 to 10 mm may be formed.
- the first reinforcement frame 300 may have a bending point 370 protruding outward (in the Z-axis direction) from the first closed section M1.
- the bending point 370 of the first reinforcing frame 300 is 30 to 70% of the installation width T of the first reinforcing frame 300 on the first inner surface 110 of the first side sill frame 100. It may be formed at a location spaced apart from each other.
- the first At the bending point 370 of the reinforcing frame 300 normal crushing may not be performed while bending induction is not performed well.
- the first reinforcement frame 300 may include a first section 331 and a second section 333.
- the first section 331 may extend toward the first inner surface 110 of the first side sill frame 100 with the bending point 370 as a boundary.
- the second section 333 is bent at the bending point 370 as a boundary and extends in the direction of the second inner surface 210 of the second side sill frame 200, and the first section 333 extends from the inside of the first closed section M1.
- a section 331 and a bending angle 390 may be formed.
- a bending point 370 may be provided at a boundary between the first section 331 and the second section 333 .
- the first section 331 and the second section 333 may be bent at the bending point 370 as a boundary.
- the bending angle 390 is formed inside the first closed section M1 and may be less than 180 degrees.
- a bending angle 390 is formed inside the first closed section M1, and the bending angle 390 may have a range of 165 to 175 degrees.
- An angle ⁇ formed between the extension line of the first section 331 and the extension line of the second section 333 may have a range of 5 to 15 degrees.
- a bending angle 390 may be formed inside the first closed section M1.
- the first reinforcement frame 300 has a bending angle 390 in the range of 165 to 175 degrees, thereby stably inducing bending at the bending point 370 while sufficiently securing the rigidity of the first reinforcement frame 300. .
- the bending angle 390 of the first reinforcing frame 300 is less than 165 degrees, bending induction may be performed well at the bending point 370, but bending induction at the bending point 370 of the first reinforcing frame 300 As it becomes too easy, a problem may occur that the load performance may deteriorate while the first reinforcing frame 300 is bent at the bending point 370 before exhibiting the designed load performance.
- 9A to 9C are deformation analysis results of a side sill for a vehicle of Comparative Example 1.
- FIG. 9A is a deformation analysis result at the beginning of a collision in Comparative Example 1
- FIG. 9B is a deformation analysis result at a middle stage in Comparative Example 1
- FIG. 9C is a deformation analysis result at the end of a collision in Comparative Example 1.
- the second side sill frame 200 and the second reinforcing frame 400 are compressed and deformed in the X-axis direction at the beginning of the collision.
- the first comparative example shows that the deformation of the first reinforcing frame 300 and the second reinforcing frame 400 does not collapse in a symmetrical shape in the X-axis direction in the middle and late stages of the collision, and unstable crushing deformation of an asymmetrical shape occurs. Able to know.
- 10A to 10C are deformation analysis results of the side sill for a vehicle according to the first embodiment.
- FIG. 10A is a deformation analysis result at the beginning of a collision according to the first embodiment
- FIG. 10B is a deformation analysis result at the middle stage of a collision according to the first embodiment
- FIG. 10C is a deformation analysis result after a collision according to the first embodiment.
- the second side sill frame 200 and the second reinforcing frame 400 are compressed and deformed in the X-axis direction at the beginning of the collision.
- first reinforcement frame 300 and the second reinforcement frame 400 are uniformly compressed in the X-axis direction without a phenomenon in which deformation is concentrated to either side.
- FIG. 11 is a load-displacement diagram of a vehicle side sill of the first comparative example of FIG. 1 and the first embodiment of FIG. 2 .
- the load-displacement value of the side sill for a vehicle of the first comparative example of FIG. 1 is represented as a first value L1
- the load-displacement value of the side sill for a vehicle of the first embodiment of FIG. 2 is represented as a second value L2.
- the vehicle side sill of the first embodiment of FIG. 2 has a relatively small displacement under the same load compared to the vehicle side sill of the first comparative example of FIG. 1 . can know that
- the shock absorbing ability is rapidly reduced at a displacement of 90 mm or more corresponding to the later stage of the collision, whereas in the case of the second value L2, the shock is stably absorbed even in the later stage of the collision.
- the internal energy of the vehicle side sill of Comparative Example 1 was 47.9 KJ
- the weight of the vehicle side sill of Comparative Example 1 was 18.7 kg
- the internal energy of the vehicle side sill of the first embodiment was 49.3 KJ.
- the weight of the vehicle side sill of the first embodiment was 18.9 kg.
- the ratio of internal energy per 1 kg of the side sill for a vehicle of Comparative Example 1 is 2.56 (KJ/kg), and the ratio of internal energy per 1 kg of the side sill for a vehicle of the first embodiment is 2.62 (KJ/kg). It can be seen that the ratio of internal energy per 1 kg is larger than that of Comparative Example 1, and the load performance is more excellent.
- first side seal frame 110 first inner surface
- first reinforcing frame 310 first upper flange
- first web member 331 first section
- second section 350 first lower flange
- second web member 450 second lower flange
- M1 first closed section
- M2 second closed section
- R1 first buffer space
- R2 second buffer space
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- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims (15)
- 제1 사이드실 프레임;상기 제1 사이드실 프레임에 결합되어 상기 제1 사이드실 프레임과 함께 중공부를 형성하는 제2 사이드실 프레임;상기 중공부에 배치되고, 일측이 상기 제1 사이드실 프레임과 접합되어 제1 폐단면을 형성하는 제1 강화프레임; 및상기 중공부에 배치되고, 일측이 상기 제1 강화프레임에 접합되어 제2 폐단면을 형성하는 제2 강화프레임;을 포함하고,상기 제1 강화프레임 및 상기 제2 강화프레임은,차량용 사이드실의 길이방향을 따라 연속적으로 형성된 요철부를 포함하는 차량용 사이드실.
- 제1항에 있어서,상기 제1 사이드실 프레임, 상기 제2 사이드실 프레임, 상기 제1 강화프레임 및 상기 제2 강화프레임 중 적어도 어느 하나는 강재로 구성된 차량용 사이드실.
- 제1항에 있어서, 상기 요철부는,상기 사이드실의 길이방향으로 돌출면과 내입면이 교번적으로 형성되고, 상기 돌출면과 상기 내입면의 사이에 경사면이 형성되고,상기 돌출면, 상기 내입면 및 상기 경사면은,각각 상기 사이드실의 길이방향과 교차되는 상기 사이드실의 폭방향-높이방향 단면상에서 연속적으로 형성되는 차량용 사이드실.
- 제3항에 있어서,상기 제1 강화프레임의 상기 돌출면은 상기 제2 강화프레임의 상기 돌출면에 겹쳐지고, 상기 제1 강화프레임의 상기 내입면은 상기 제2 강화프레임의 상기 내입면에 겹쳐지는 차량용 사이드실.
- 제3항에 있어서,상기 제1 강화프레임의 상기 내입면은 상기 제1 사이드실 프레임의 제1 내면에 접합되고,상기 제1 강화프레임의 상기 돌출면은 상기 제1 사이드실 프레임의 제1 내면과 이격되면서 제1 완충공간이 형성되는 차량용 사이드실.
- 제5항에 있어서,상기 제1 강화프레임의 내입면은 상기 사이드실의 길이방향으로 15 ~ 50 mm의 설치길이를 가지는 차량용 사이드실.
- 제3항에 있어서,상기 제2 강화프레임의 상기 돌출면은 상기 제2 사이드실 프레임의 제2 내면에 접합되고,상기 제2 강화프레임의 상기 내입면은 상기 제2 사이드실 프레임의 제2 내면과 이격되면서 제2 완충공간이 형성되는 차량용 사이드실.
- 제7항에 있어서,상기 제2 강화프레임은 돌출면이 상기 사이드실의 길이방향으로 15 ~ 50 mm의 설치길이를 가지는 차량용 사이드실.
- 제3항에 있어서, 상기 제1 강화프레임 및 상기 제2 강화프레임은,상기 돌출면 및 상기 내입면이 상기 사이드실의 길이방향으로 15 ~ 50 mm의 설치길이를 가지고,상기 돌출면과 상기 내입면의 사이에는 2 ~ 10 mm의 단차가 형성되는 차량용 사이드실.
- 제1항에 있어서, 상기 제1 강화프레임 및 상기 제2 강화프레임은,상기 제2 사이드실 프레임의 제2 내면에서 상기 제1 사이드실 프레임의 제1 내면에 방향으로 갈수록 설치폭이 감소하지 않는 것을 특징으로 하는 차량용 사이드실.
- 제1항에 있어서, 상기 제1 강화프레임 및 상기 제2 강화프레임은,단일의 강판을 다단으로 절곡하여 형성되는 것을 특징으로 하는 차량용 사이드실.
- 제1항에 있어서, 상기 제1 강화프레임은,상기 제1 폐단면에서 외측으로 돌출된 형태의 벤딩포인트를 가지는 차량용 사이드실.
- 제12항에 있어서, 상기 제1 강화프레임은,상기 벤딩포인트의 위치가 상기 제1 사이드실 프레임의 제1 내면에서 상기 제1 강화프레임의 설치폭의 30 ~ 70 % 만큼 거리를 두고 이격된 위치에 형성되는 차량용 사이드실.
- 제12항에 있어서, 상기 제1 강화프레임은,상기 벤딩포인트를 경계로 상기 제1 사이드실 프레임의 제1 내면 방향으로 연장 형성되는 제1 구간; 및상기 벤딩포인트를 경계로 절곡되어 상기 제2 사이드실 프레임의 제2 내면 방향으로 연장 형성되고, 상기 제1 폐단면의 내부에서 상기 제1 구간과 벤딩각을 형성하는 제2 구간;을 포함하는 차량용 사이드실.
- 제14항에 있어서, 상기 제1 강화프레임은,상기 벤딩각이 상기 제1 폐단면의 내부에 형성되고, 상기 벤딩각은 165 ~ 175 도의 범위를 가지는 것을 특징으로 하는 차량용 사이드실.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202280075711.8A CN118251342A (zh) | 2021-11-16 | 2022-11-03 | 用于车辆的侧梁 |
| US18/708,845 US20250187667A1 (en) | 2021-11-16 | 2022-11-03 | Side sill for vehicle |
| JP2024528558A JP7762303B2 (ja) | 2021-11-16 | 2022-11-03 | 車両用サイドシル |
| EP22895913.6A EP4434852A4 (en) | 2021-11-16 | 2022-11-03 | Side sill for vehicle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020210157839A KR20230071531A (ko) | 2021-11-16 | 2021-11-16 | 차량용 사이드실 |
| KR10-2021-0157839 | 2021-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023090706A1 true WO2023090706A1 (ko) | 2023-05-25 |
Family
ID=86397343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2022/017117 Ceased WO2023090706A1 (ko) | 2021-11-16 | 2022-11-03 | 차량용 사이드실 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250187667A1 (ko) |
| EP (1) | EP4434852A4 (ko) |
| JP (1) | JP7762303B2 (ko) |
| KR (1) | KR20230071531A (ko) |
| CN (1) | CN118251342A (ko) |
| WO (1) | WO2023090706A1 (ko) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12415569B2 (en) | 2022-01-07 | 2025-09-16 | Shape Corp. | Rocker insert with corrugated structure |
| US20250296628A1 (en) * | 2024-03-22 | 2025-09-25 | Honda Motor Co., Ltd. | Reinforcement assembly for a side sill of a vehicle |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240176261A (ko) * | 2023-06-15 | 2024-12-24 | 주식회사 포스코 | 차량용 사이드실 |
| US20250296635A1 (en) * | 2024-03-22 | 2025-09-25 | Honda Motor Co., Ltd. | Reinforcement assembly for a side sill of a vehicle |
| US20250313268A1 (en) * | 2024-04-05 | 2025-10-09 | Fisker Inc. | Electric vehicle battery protection from side impacts |
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- 2022-11-03 WO PCT/KR2022/017117 patent/WO2023090706A1/ko not_active Ceased
- 2022-11-03 CN CN202280075711.8A patent/CN118251342A/zh active Pending
- 2022-11-03 US US18/708,845 patent/US20250187667A1/en active Pending
- 2022-11-03 JP JP2024528558A patent/JP7762303B2/ja active Active
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| US12415569B2 (en) | 2022-01-07 | 2025-09-16 | Shape Corp. | Rocker insert with corrugated structure |
| US20250296628A1 (en) * | 2024-03-22 | 2025-09-25 | Honda Motor Co., Ltd. | Reinforcement assembly for a side sill of a vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20230071531A (ko) | 2023-05-23 |
| JP7762303B2 (ja) | 2025-10-29 |
| JP2024541373A (ja) | 2024-11-08 |
| US20250187667A1 (en) | 2025-06-12 |
| EP4434852A1 (en) | 2024-09-25 |
| EP4434852A4 (en) | 2025-03-12 |
| CN118251342A (zh) | 2024-06-25 |
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